21200031124133 has 8 divisors (see below), whose sum is σ = 21702752589408. Its totient is φ = 20697750453744.

The previous prime is 21200031124093. The next prime is 21200031124177. The reversal of 21200031124133 is 33142113000212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21200031124133 - 2¹⁶ = 21200031058597 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21200031124099 and 21200031124108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21200031724133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110101391 + ... + 110293772.

It is an arithmetic number, because the mean of its divisors is an integer number (2712844073676).

Almost surely, 2^{21200031124133} is an apocalyptic number.

It is an amenable number.

21200031124133 is a deficient number, since it is larger than the sum of its proper divisors (502721465275).

21200031124133 is a wasteful number, since it uses less digits than its factorization.

21200031124133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220397443.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 21200031124133 its reverse (33142113000212), we get a palindrome (54342144124345).

The spelling of 21200031124133 in words is "twenty-one trillion, two hundred billion, thirty-one million, one hundred twenty-four thousand, one hundred thirty-three".